According to Data in 2364, Lore's abilities, including his use of syntax and grammar, suggested he was given Human memories similar to Data's own. (TNG: "Datalore")

In 2368, Data stated that it wasn't possible to translate the Tamarian language just by understanding it's allegorical nature, but not the concrete images. He compared this to knowing the grammar of a language, but none of the vocabulary. (TNG: "Darmok")